package com.sheyu.springcloud.controller;


import com.sheyu.springcloud.config.CommonResult;
import com.sheyu.springcloud.entity.Payment;
import com.sheyu.springcloud.lb.LoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

@RestController
@Slf4j
public class OrderController {
    private static final String PAYMENT_URL="http://CLOUD-PAYMENT-SERVICE";
    @Resource
    private RestTemplate restTemplate;

    @Resource
    private DiscoveryClient discoveryClient;

    @Resource
    private LoadBalancer loadBalancer;

    @PostMapping("/consumer/payment/create")
    public CommonResult<Payment> create(@RequestBody Payment payment){
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB() {
    List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
    if (instances == null || instances.size() <= 0) {
        return null;
    }
    ServiceInstance serviceInstance = loadBalancer.instances(instances);
    URI uri = serviceInstance.getUri();
    return restTemplate.getForObject(uri + "/payment/lb", String.class);
    }
}
